Lions QB Stanton to have surgery, sign Bollinger

Stanton will undergo arthroscopic surgery on his left knee and is expected to miss several weeks. The Lions, though, are keeping Stanton on the active roster until they get a more accurate read on when he might be back.

With veteran Daunte Culpepper still sidelined with a toe injury -- he wasn't at practice today -- the Lions signed free agent quarterback Brooks Bollinger. To make room on the roster, the Lions released veteran free agent guard Terrence Metcalf.